Ultra sound one day turn around?!

I've had swollen lymph nodes in my neck for roughly 9 months however 10 weeks ago my right side became hugely prominent so I went to the doctors who referred me to ultrasound. 

Yesterday I had the ultrasound and the radiologist confirmed all the lymph nodes in my neck are enlarged/swollen but with the right side being more swollen. I also had blood tests but the gp surgery receptionist said everything was normal.

I have been feeling ridiculously tired for about 5 months, falling asleep on buses and at work having to sneak naps so I can feel I can get through the day. I have also been having restriction in breathing deeply as my back ribs feel like they cannot expand and my body just feels tired. 

The ultrasound results came back today and I have to book an appointment to discuss results. I'm really anxious that they've come back so quickly, especially in this period. Anyone had the same turn around time.